$(".tip-dropDown").bind("click",function () {
    var $tipContent =  $(this).parent().parent().find(".tip-content");
    if($(this).attr("drop")=="true"){
    $tipContent.slideDown();
    $(this).find("img").attr("src","/template/LSD/img/dropup.png");
    $(this).attr("drop",false);
    }else{
    $tipContent.slideUp();
    $(this).find("img").attr("src","/template/LSD/img/dropdown.png");
    $(this).attr("drop",true);
    }
    });